package 设计原则和思想.充血模型与贫血模型.贫血模型;

import java.math.BigDecimal;

public class VirtualWalletRepository {
    public VirtualWalletEntity getWalletEntity(Long walletId) {
        return null;
    }

    public BigDecimal getBalance(Long walletId) {
        return null;
    }

    public void updateBalance(Long walletId, BigDecimal subtract) {

    }
}
